I figured it will need some kind of cooler but the temptation
is to use a reservoir to store pressured oil so when required
you can release the energy stored as pressurised oil and also
a simple valve could be used to adjust the amount of boost
pressure you need. The main thing is the storage of oil will
act like an ultra-capacitor ready to unleash the juice and
spin that baby up.

Aesthetics is part of it by simplifying the connections but the
pressurized tank will need space somewhere. But how cool will it
looks with a Steampunk finish of brass, copper and stainless :)